I’ve visited this country 3 times: 1997, 2007 and 2016. Mostly I’ve seen London, but I spent several days camping in Hylands Park, Chelmsford, Essex. I love British humor, their politeness and pronunciation.
A friend gifted me his Oyster card and it was a great way to move around in public transportation. Just remember the airport fare is higher (and if you go back you’ll have to pay, even if it’s 9 years later).
Given the opportunity, I’d definitely move to this city. It’s beautiful. But it’s also extremely confusing having everything on the opposite side. Besides every time turning to the wrong side of the street to see if cars are coming, I missed a lot of buses and never understood where to take them. So, I suggest taking the Underground (or an Uber if it’s 4 am and you’re going to miss your flight).
YOU’RE A WIZARD, HARRY!
If you’re a Harry Potter fan, there are lots of activities for you in London. It is nearly impossible to get tickets for the musical, but you can visit platform 9 and 3/4 at King’s Cross station or cross over the Millenium Bridge (the one destroyed in Half Blood Prince).
A great place to try lots of delicious food while in London: bread, cheese, honey… It’s basically like a farmer’s market, but British style. There’s also live music, and when we went, there were large cardboard animal heads from where you could see what they see.